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Full text of "MACHINE FOR CRIMPING LEATHER FOR BOOTS, &C. - United States Patent 656"

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Specification of Letters Patent No. 656, dated March 26, 1838; 
Antedated September 26, 1837.

To all whom it may concern:

Be it known that I, Joseph Adams, of Fairhaven, in the county of 
Rutland and State of Vermont, have invented a new and useful 
Machine for Crimping Boot-Fronts; and I do hereby declare the 
following is a full and exact description.

The nature of my invention consists in the construction and 
combination of jaws and carriage for a boot crimp to rest on with 
a double vise cast-iron wheel and pinions and cranks, and rack so 
attached as to work the whole of the machine so as to produce the 
intended effect of crimping boot fronts.

To enable others to make and use my invention I will proceed to 
describe its construction and operation.

I construct the frame of my machine in the following manner: Two 
posts four feet seven inches long and two inches and a half 
square (as shown by letter B in the drawing) and worked into two 
sills, eighteen inches long of the same dimensions of the posts 
(shown by letter K) and connected by a girth twenty one inches 
long of the same dimension, about three inches from the top of 
the posts b (shown by letter A) and by another girth of the same 
dimensions (also shown by letter A) about eighteen inches from 
the bottom of said posts, two wooden jaws ten inches wide and 
twelve long (as shown by letter C) and framed into the upper 
girth near the center and pointed at the lower end to fit the 
crimp, the point of said jaws to hang directly over the angle or 
curve of the crimp hereafter mentioned. These jaws are supported 
by two braces of convenient size. To prevent them from splitting 
an iron bolt about three quarters of an inch is passed through 
the jaws and braces about seven inches from the points of said 
jaws with a square flat head on the back side and sunk in to the 
brace to keep it from turning and a screw on the other end, with 
a crank about six inches long, and nut on the end, to shut the 
jaws, which are set in the girth so as to make them slightly 
movable, so as they may open and shut, a straight spring of 
sufficient strength is inserted between the jaws so as not to 
infringe with the bolt and action of the machine, for the purpose 
of opening them, with creases in the inside of the jaws, to force 
the leather on to the crimp, a carriage constructed of bed work 
(as shown by the letters M and N) and framed into a bed piece of 
the same size of the posts (as shown by letter G) and runs in 
grooves in the posts between the two girths, a crimp after the 
form ordinarily used by cordwaihners (shown by letter D) about 
half an inch thick is placed on the bedwork, which is made of 
plank of the same thickness of the bed piece and fitted to the 
crimp with �, the bed work at each end of the crimp and center, 
to receive the said crimp and keep it in its place. Two pairs of 
reversed jaws indented into the heel work at right angles from 
the crimp (as shown by the letters E) of similar shape of the 
others with hooking crimps on the instep to extend the leather 
and shut in the same manner of the upper jaws, as shown by the 
letters F on the head of the bolts, and small spiral springs 
inserted between the jaws just below the bolt to throw them open, 
with a small girth of wood at the bottom of the jaws working at 
each end like a hinge to keep the lower end of the jaws from 
spreading so as to extend the top or mouth of the jaws to receive 
the crimp and leather, with a piece cut out of the bedwork for 
the girth and bolt to work in, a cast iron rack is attached to 
the bed piece (as shown by letter Q) about an inch and a quarter 
wide of sufficient thickness, with half inch cogs, and passes 
down through the lower girth. This rack is moved by a pinion 
wheel (as shown by letter P) of 3 inches and a half spangler sunk 
into the lower girth so as to connect with the rails, a shaft 
passes through the pinion and a wheel of about fifteen inches 
diameter (as shown by O) and one end of the shaft resting on the 
girth and the other on a standard (as shown by letter I) and 
mortised into a cross piece resting on the sills as shown by 
letter J and turned by a crank twelve or fourteen inches long 
attached to the shaft that passes through a pinion two inches and 
a half diameter shown by letter T connected with the wheel (O) 
and resting on a standard (as shown by letter H) attached to the 
left post by a bolt and framed into the piece resting on the 
sills a double cast iron vise (as shown by letter H) of four 
inches and a half head and nine inches shank inserted in the 
bedwork to the right of the center of the rack, the shank passes 
down through the bed no piece and lower girth containing two sets 
of teeth indented at the top, with an opening in the center three 
inches long to receive the crimp the jaws of the vise working at 
the bottom of the head on a hinge, an iron rod about three 
eighths of an inch 5 square passes through the vise horizontally 
two and a half inches from the top and movable. Secured with a 
nut and screw on one side and secured with a small crank and nut 
on the other end to shut the vise with two common 
straight-springs inserted

between the jaws of the vise to throw them open. An iron slide 
six inches long, half

an inch wide, and a quarter thick passes through a bolt and 
staple that fastens it to the lower girth (as shown by letter L) 
and slides into a notch in the right of the shank of the vise 
about one inch from the bottom of the shank to hold it fast. Two 
pairs of clamps (shown by U) attached to the upper sections of 
the bedwork and shut in the same manner as the jaws to fasten the 
top and toe of the boot front to prevent its sinking at the 
instep and ankle in thin tight leather a small slide and spring 
attached to the lower side of the bed piece, (or spring) to snap 
into the notches on the right side of the vise to hold it when 
the corners of the boot is brought to their proper place.

All of the machine must be made of some good durable hard wood, 
except the castings, and all of the jaws may be faced with sheet 
brass or copper to make them more durable but is not necessary 
except for durability.

To make an operation with the above described machine, the 
leather must be thoroughly wet and doubled in the center and 
placed in the crimp. Then close the upper jaws with the crank 
attached for that purpose to a suitable distance to receive the 
leather and crimp. Then move the carriage up with the crank 
attached to the pinion T so as to force the leather and crimp 
between the upper jaws. Then open the jaws and let the carriage 
fall down and fasten the vise with the slide, attached for that 
purpose. Then lower the carriage so as to project the rim above 
the bedwork on each side of the crimp. Then place the corners of 
the boot front into the vise and fasten them with the crank that 
shuts the vise. Then raise the carriage until the corners of the 
boot are brought to their proper plane. Then let the vise loose 
from the slide and force up the crimp as before to smooth down 
the wrinkles that may rise. Then raise the reversed jaws so as to 
bring them full on to the leather and crimp. Then close them with 
cranks on the end of the bolts marked f, and close the upper jaws 
as before, and force the leather and crimp up in between the 
upper jaws, which will force the reversed jaws back to their 
place and the leather is ready to tack on to the crimp and take 
out of the machine. In case of hard stubborn leather the corners 
of the boot front had better be brought down by degrees, by 
drawing the corners of the boot front one or two notches at a 
time. Then let the vise loose and drive the leather and crimp up 
into the upper jaws to prevent wrinkles rising in the curve of 
the crimp, so continue the operation until the corners are 
brought to their proper plane. Then proceed with the reversed 
jaws as above.

I claim as my invention, and desire to secure by Letters Patent�

The reversed jaws E, E, constituted and operating substantially 
as herein described: and I claim them also, in their combination 
with the jaws C, C, as herein described.


Witnesses: Alonson Allen, James M. Chase.